Rep. Alexandria Ocasio-Cortez of New York took to Twitter on Tuesday night to slam former Starbucks CEO Howard Schultz after he criticized her marginal tax plan, the Green New Deal, without countering with a tax plan of his own. 

At a CNN town hall on Tuesday night, Schultz, who may run as an independent in the 2020 presidential election, called Ocasio-Cortez's Green New Deal "immoral" and "not realistic." He also stated that politicians should not "throw things against a wall because it’s a good slogan or we get a press release."

"When I see politicians start throwing things out that I know is not realistic, that is not being honest with the American people," added Schultz.

The billionaire businessman would later evade questioning by moderator Poppy Harlow about taxation, only answering that he "should be paying more taxes."

"The headline is here: I should be paying more taxes," Schultz said. "And people who make this kind of revenue, and are of means, should pay more taxes."

When pressed for an actual rate for the richest Americans, Schultz responded: "I don’t know what the number is."

After the town hall, Ocasio-Cortez added to a Twitter comment from former Michigan Gov. Jennifer Granholm, who had noted that it was "strange" that Schultz "could not say what a fair marginal tax rate would be." 

Ocasio-Cortez used Granholm's comment to point out that Schultz has yet to reveal his own tax plan. "[F]or billionaires, things are already going fine," Ocasio-Cortez added. 

Ocasio-Cortez and Sen. Ed Markey of Massachusetts introduced their plan on Feb. 7, which includes cutting carbon emissions, revamping infrastructure and creating new high-wage jobs.

The resolution also calls for a 70 percent top marginal tax rate on incomes above $10 million.